Specifications

13-2
Troubleshooting
Entry Chart
Entry Chart
All troubleshooting starts from the Entry Chart below:
Perform System Verification,
see page 2-18.
Are any
Error Indicators
lit, see page
13-3?
Is the
display blank
or distorted
?
Were the
element parameters
displayed for each
element on your
system?
Is
the clock
frequency
correct ?
Go to Error Indicators
on page 13-3.
Ensure the Display and
70843 are properly
powered on.
Check the Display
intensity control.
Suspect the Display.
Suspect communication
problems between the
Display and the elements,
see page 13-3.
Suspect Clock Signal
problem, see page 13-9.
System O.K.
YES
YES
YES
YES
NO
NO
NO
NO